Rope falling prevention structure of lifting lug

Abstract

The utility model relates to the technical field of rope falling prevention structures, in particular to a rope falling prevention structure of a lifting lug, which comprises a rotating column and a mounting shell, semicircular grooves are formed in two ends of the rotating column, the rotating column is rotatably mounted in the mounting shell, a rope hooping hole is formed in the middle of the rotating column along the radial direction of the rotating column, and rope pressing grooves are formed in two sides of the rope hooping hole; a rope pressing block is rotatably installed in each rope pressing groove, an elastic piece is arranged between each rope pressing block and the rotating column, a rope containing annular groove is formed in the outer side of the middle of the rotating column, a semicircular tooth block is fixedly installed in the semicircular groove, the semicircular tooth block is clamped and fixed to the installation shell, and when a steel cable is installed, the steel cable enters from the end, close to a rotating shaft of the rope pressing block, of the rope hooping hole. By arranging the rope pressing block and supporting the rope pressing block through the elastic piece, when the steel cable is pulled to move outwards, the rope pressing block rotates towards the rope hooping hole to press the steel cable, and the possibility that the steel cable is disengaged during hoisting is reduced by combining the friction force of the rope containing ring groove and the mounting shell to the steel cable.

Description

Technical Field

[0001] The present application relates to the technical field of anti-rope-off structures, and in particular to an anti-rope-off structure for a lifting eye. Background Art

[0002] The lifting lug is a device that is fixed to the end face of the hoisted object and connected to the steel cable of the lifting equipment. When connecting, the steel cable needs to be fixed to the lifting lug. The larger the lifting mass of the steel cable, the larger the diameter and the greater the stiffness of the steel cable. Therefore, it cannot be knotted like a rope. It needs to be tightened by a steel hoop or other means such as a buckle. After tightening, it is fixed by the friction provided by the tightening. When the bolts providing the tightening force are loose or not tightened in place, it is very easy to cause the steel cable to fall out and cause danger. Summary of the invention

[0003] In view of the deficiencies in the prior art, the purpose of the present application is to provide a lifting eye anti-rope-slip structure that can better fix the steel cable on the lifting eye.

[0004] The above application objectives of this application are achieved through the following technical solutions:

[0005] A rope-off prevention structure for a lifting eye, comprising:

[0006] A rotating column, wherein both ends of the rotating column are provided with semicircular grooves;

[0007] A mounting shell, wherein the rotating column is rotatably mounted in the mounting shell, both ends of the rotating column pass through the mounting shell, a rope entry hole is provided at the upper end of the mounting shell, and a connecting piece is provided at the lower end of the mounting shell;

[0008] A rope hoop hole, the rope hoop hole is opened in the middle of the rotating column along the radial direction of the rotating column;

[0009] A rope pressing block, both sides of the rope hoop hole are provided with rope pressing grooves, and the two rope pressing blocks are rotatably installed in the rope pressing grooves respectively;

[0010] An elastic member, which is disposed between the rope pressing block and the rotating column, and which enables the rope pressing block to rotate into the rope hoop hole;

[0011] A rope ring groove, the rope ring groove is arranged outside the middle of the rotating column, and the rope ring groove is used to place the steel cable;

[0012] A semicircular tooth block, the semicircular tooth block is fixedly installed in the semicircular groove, and the semicircular tooth block is clamped and fixed to the mounting shell;

[0013] When the steel cable is installed, it enters from the end of the rope hoop hole close to the rotating shaft of the rope pressing block.

[0014] Optionally, a plurality of triangular chamfers are provided on one side of the rope pressing block close to the rope hoop hole, and the triangular chamfers extend along the entry direction of the steel cable.

[0015] Optionally, the surface where the triangular chamfer is located is a curved surface.

[0016] Optionally, an annular groove is provided on the inner side of the mounting shell near the rope ring groove.

[0017] Optionally, the inner side surface of the rope ring groove is configured as a friction hemp surface.

[0018] Optionally, one end of the rope pressing block away from the rope hoop hole is an arc end, a supporting arc block is arranged in the rope pressing groove, and the arc end fits the supporting arc block.

[0019] Optionally, the edge of the rope hole at the upper end of the mounting shell is configured as a rounded chamfer.

[0020] Optionally, a rotation auxiliary hole is provided on the end surface of the rotation column, and a key groove is provided on the side surface of the rotation auxiliary hole.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] By setting a rope pressing block and supporting it with an elastic member, when the steel cable moves outward under tension, the rope pressing block rotates into the rope hoop hole to compress the steel cable. The greater the force of the steel cable moving outward under tension, the greater the force of the corresponding rope pressing block rotating and squeezing the steel cable, thereby reducing the possibility of the steel cable coming out. And by setting a rotating column, after the steel cable is placed in the rope hoop hole, it rotates so that the steel cable wraps around the rotating column in the rope ring groove, thereby reducing the possibility of coming out through friction.

[0023] By setting the triangular chamfer, it is easier for the rope pressing block to rotate with the steel cable when the steel cable tends to come out. At the same time, during the rotation process, the triangular chamfer bites with the surface of the steel cable to reduce the possibility of the rope pressing block loosening.

[0024] By arranging the arc end and the supporting arc block, the supporting arc block can provide supporting force when the rope pressing block is under pressure, thereby reducing the possibility that the rope pressing block loses its function due to damage to the rotating shaft due to excessive pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the internal structure of a rotating column according to an embodiment of the present application;

[0026] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0027] Figure 3 It is a schematic diagram of the structure of the rotating column of an embodiment of the present application.

[0028] Reference numerals: 1, rotating column; 101, rotating auxiliary hole; 11, semicircular groove; 12, hoop rope hole;

[0029] 2. Install the shell;

[0030] 31. Rope pressing block; 311. Triangular chamfer; 32. Rope pressing groove; 321. Support arc block; 33. Elastic member;

[0031] 4. Rope ring groove;

[0032] 5. Semicircular gear block. DETAILED DESCRIPTION

[0033] The present application is further described in detail below in conjunction with the accompanying drawings.

[0034] See also Figure 1-Figure 3 , is a lifting eye anti-rope-off structure disclosed in the embodiment of the present application, comprising a rotating column 1 and a mounting shell 2, see Figure 1 , semicircular grooves 11 are provided at both ends of the rotating column 1, and the rotating column 1 can be rotatably installed in the installation shell 2. Both ends of the rotating column 1 pass through the installation shell 2, and a rope entry hole is provided at the upper end of the installation shell 2. A connecting piece is provided at the lower end of the installation shell 2. The connecting piece can be set to a hook shape or a ring shape according to the use requirements of the lifting ear. A rope hoop hole 12 is provided in the middle of the rotating column 1 along the radial direction of the rotating column 1, and rope pressing grooves 32 are provided on both sides of the rope hoop hole 12. A rope pressing block 31 can be rotatably installed in the rope pressing groove 32. An elastic member 33 is provided between the rope pressing block 31 and the rotating column 1. The elastic member 33 enables the rope pressing block 31 to rotate into the rope hoop hole 12. A rope ring groove 4 is provided on the outer side of the middle part of the rotating column 1. The rope ring groove 4 is used to place the steel cable. Please refer to Figure 2 A semicircular tooth block 5 is fixedly installed in the semicircular groove 11, and the semicircular tooth block 5 is clamped and fixed to the installation shell 2. When the steel cable is installed, it enters from the rope hoop hole 12 close to one end of the rotating shaft of the rope pressing block 31.

[0035] Specifically, a rotating column 1 is arranged in the mounting shell 2, and a rope hoop hole 12 is opened in the center of the rotating column 1, so that the free end of the steel cable is inserted into the rope hoop hole 12, and a rope pressing block 31 is arranged in the rope hoop hole 12, and the rope pressing block 31 is supported by an elastic member 33 so that the steel cable is pressed tightly, and a rope ring groove 4 and a semicircular tooth block 5 are arranged, so that after the steel cable is inserted, the rotating column 1 is rotated to press the steel cable into the rope ring groove 4 and fix it through the semicircular tooth block 5.

[0036] In this way, by setting up the rope pressing block 31 and supporting it through the elastic member 33, when the steel cable moves outward under tension, the rope pressing block 31 follows and rotates into the rope hoop hole 12 to compress the steel cable. The greater the force of the steel cable moving outward under tension, the greater the force of the corresponding rope pressing block 31 rotating and squeezing the steel cable, thereby reducing the possibility of the steel cable coming out.

[0037] Furthermore, by providing a rotating column 1, after the steel cable is placed in the rope hoop hole 12, the steel cable is rotated to wrap around the rotating column 1 in the rope ring groove 4, thereby reducing the possibility of slipping out through friction.

[0038] In some feasible embodiments, the rotating column 1 includes two semi-cylinders, which are fixedly connected by bolts. To facilitate fixing in the mounting shell 2, a step surface is provided on the side of the rotating column 1. The mounting shell 2 includes two semi-cylindrical shells fixedly connected by bolts. Through holes are provided at both ends of the mounting shell 2. The semi-circular groove 11 and the step surface are located in the through holes. A placement hole for the semi-circular tooth block 5 is provided on one side of the through hole. The semi-circular tooth block 5 is bolted to the rotating column 1.

[0039] The rope hoop hole 12 passes through the rotating column 1, the rope pressing groove 32 is a rectangular groove, the rope pressing block 31 is a special-shaped block, and the elastic member 33 can be selected as a V-shaped spring sheet. The elastic member 33 enables the rope pressing block 31 to press the steel cable tightly, so that when the steel cable is installed, it enters from the rope hoop hole 12 close to the rotating axis of the rope pressing block 31, so that when the steel cable is subjected to tension, the rope pressing block 31 is pulled to squeeze itself to form pressure.

[0040] When in use, the free end of the steel cable is placed in the rope hoop hole 12, the rope pressing block 31 presses the steel cable, and the rotating column 1 is rotated for one circle, so that the steel cable is wound around the rope ring groove 4 for one circle, and the semicircular tooth block 5 is installed to limit the rotation of the rotating column 1. The squeezing force of the rope pressing block 31 and the friction force of the steel cable wound around the rope ring groove 4 increase the anti-slip performance and reduce the possibility of the steel cable slipping out.

[0041] As a specific implementation of the anti-rope-off structure of a lifting eye provided in the application, please refer to Figure 1 A plurality of triangular chamfers 311 are provided on one side of the rope pressing block 31 close to the rope hoop hole 12, and the triangular chamfers 311 extend along the direction in which the steel cable enters.

[0042] In general, by setting The triangular chamfer 311 makes it easier for the rope pressing block 31 to rotate with the steel cable when the steel cable has a tendency to come out. Meanwhile, during the rotation process, the triangular chamfer 311 engages with the surface of the steel cable, reducing the possibility of the rope pressing block 31 coming loose.

[0043] Furthermore, the surface where the triangular chamfer 311 is located is an arc-shaped surface.

[0044] It should be understood that by providing the arc-shaped surface, the triangular chamfer 311 can better fit the steel cable and better restrict the steel cable.

[0045] Provided as an application A rope-off prevention structure for a lifting eye Another specific implementation method, An annular groove is arranged on the inner side of the mounting shell 2 near the rope ring groove 4 .

[0046] In combination with specific usage scenarios, an annular groove is provided to increase the contact surface between the mounting shell 2 and the steel cable, thereby increasing the friction force of the mounting shell 2 on the steel cable, further reducing the possibility of the steel cable coming out.

[0047] Furthermore, the inner side surface of the rope ring groove 4 is configured as a friction hemp surface.

[0048] It should be understood that by providing the pitted surface, the friction force is further increased and the possibility of the steel cable coming out is reduced.

[0049] Provided as an application A rope-off prevention structure for a lifting eye Another specific implementation method, One end of the rope pressing block 31 away from the rope hoop hole 12 is an arc end, and a supporting arc block 321 is arranged in the rope pressing groove 32 , and the arc end fits the supporting arc block 321 .

[0050] In combination with specific usage scenarios, when the steel cable drives the rope pressing block 31 to rotate, the position of the rotating column 1 of the rope pressing block 31 is under pressure. By setting the arc end and the supporting arc block 321, the supporting arc block 321 provides supporting force when the rope pressing block 31 is under pressure, thereby reducing the possibility that the rotating shaft is damaged due to excessive pressure, causing the rope pressing block 31 to lose its function.

[0051] Provided as an application A rope-off prevention structure for a lifting eye A specific implementation method of The edge of the rope hole at the upper end of the mounting shell 2 is set to be rounded.

[0052] It should be understood that the rope entry hole at the upper end of the mounting shell 2 is the connection position of the steel cable. During use, the steel cable will collide with the edge of the rope entry hole due to the swing of the steel cable. The rounded chamfer is set to reduce the wear on the steel cable and increase its service life.

[0053] Provided as an application A rope-off prevention structure for a lifting eye A specific implementation method, A rotation auxiliary hole 101 is provided on the end surface of the rotation column 1 , and a key groove is provided on the side surface of the rotation auxiliary hole 101 .

[0054] In combination with the specific use environment, when the diameter of the steel cable is large, the rotating column 1 needs to be rotated by a driving device such as a motor. By providing a rotation auxiliary hole 101 and opening a key slot, auxiliary rotation can be facilitated by the driving device.

[0055] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A lifting eye anti-rope-off structure, characterized in that: include: A rotating column (1), wherein both ends of the rotating column (1) are provided with semicircular grooves (11); A mounting shell (2), wherein the rotating column (1) is rotatably mounted in the mounting shell (2), both ends of the rotating column (1) pass through the mounting shell (2), a rope insertion hole is provided at the upper end of the mounting shell (2), and a connecting piece is provided at the lower end of the mounting shell (2); A rope hoop hole (12), the rope hoop hole (12) being opened in the middle of the rotating column (1) along the radial direction of the rotating column (1); A rope pressing block (31), rope pressing grooves (32) are provided on both sides of the rope hoop hole (12), and the two rope pressing blocks (31) are rotatably installed in the rope pressing grooves (32); an elastic member (33), the elastic member (33) being arranged between the rope pressing block (31) and the rotating column (1), the elastic member (33) causing the rope pressing block (31) to rotate into the rope hoop hole (12); A rope ring groove (4), the rope ring groove (4) being arranged on the outer side of the middle part of the rotating column (1), and the rope ring groove (4) being used for placing a steel cable; A semicircular tooth block (5), the semicircular tooth block (5) being fixedly mounted in the semicircular groove (11), and the semicircular tooth block (5) being clamped and fixed to the mounting shell (2); When the steel cable is installed, it enters from the rope hoop hole (12) at one end close to the rotation axis of the rope pressing block (31).

2. The anti-rope-off structure of a lifting eye according to claim 1, characterized in that: A plurality of triangular chamfers (311) are provided on one side of the rope pressing block (31) close to the rope hoop hole (12), and the triangular chamfers (311) extend along the direction in which the steel cable enters.

3. The anti-rope-off structure of a lifting eye according to claim 2, characterized in that: The surface where the triangular chamfer (311) is located is an arc-shaped surface.

4. The anti-rope-off structure of a lifting eye according to claim 1, characterized in that: An annular groove is provided on the inner side of the mounting shell (2) near the rope placement ring groove (4).

5. The anti-rope-off structure of a lifting eye according to claim 4, characterized in that: The inner side surface of the rope placement ring groove (4) is arranged as a friction hemp surface.

6. The anti-rope-off structure of a lifting eye according to claim 1, characterized in that: One end of the rope pressing block (31) away from the rope hoop hole (12) is an arc end, a supporting arc block (321) is provided in the rope pressing groove (32), and the arc end fits in contact with the supporting arc block (321).

7. The anti-rope-off structure of a lifting eye according to claim 1, characterized in that: The edge of the rope entry hole at the upper end of the mounting shell (2) is arranged to be rounded.

8. The anti-rope-off structure of a lifting eye according to any one of claims 1 to 7, characterized in that: The end surface of the rotating column (1) is provided with a rotating auxiliary hole (101), and the side surface of the rotating auxiliary hole (101) is provided with a key groove.

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